Investigation into Sydney bikie Mick Hawi's murder 'like a jigsaw puzzle'

NSW Police are carrying out multiple raids in Sydney's south searching for evidence over the daylight execution of former bikie boss Mahmoud "Mick" Hawi .

Former Comanchero bikie boss Mick Hawi was gunned down in Sydney's south. Source: AAP

NSW police officers have seized vehicles during morning raids across several south Sydney properties in relation to the daylight execution of former bikie boss Mahmoud "Mick" Hawi.

Strikeforce investigators swooped on six properties, including a Padstow business and a white weatherboard Beverley Hills home, after 7am Thursday looking for evidence.

Detectives seized vehicles for forensic examination, NSW Police said in a statement on Thursday.

Detectives speak with a man during their search of a home in Beverly Hills, Sydney. Source: AAP

Several search warrants were executed as part of an investigation into who was behind the murder of the former Comancheros president, who was gunned down outside a Rockdale gym in February.

Confronting footage of the shooting was aired the following month showing the 37-year-old Hawi getting into his 4WD parked outside Fitness First, before a gunman, dressed in black, runs towards the driver's side of the car.

The gunman - an arm's length from the car - appears to fire multiple shots at Hawi sitting in the driver's seat.

CCTV shows the alleged gunmen running from the scene of Hawi's shooting. Source: Supplied

The attacker then leans into the car and continues firing at the ex-leader of the Comancheros before running from the carpark.

Hawi died a few hours later in St George Hospital.

His luxury 4WD was peppered with at least half a dozen bullets in the hit which detectives say was a planned and targeted attack.

Following the raids, Detective Superintendent Deborah Wallace told the media police were closing in on the killers.

"We believe there are a number of people in the planning... it was coordinated and well planned," she said.

Mourners carry Hawi's coffin during his funeral. Source: AAP

"We think we have established the reason for the execution - it's like a jigsaw puzzle."

NSW Police Force previously said the alleged shooter may have fled in a vehicle while a Mercedes station wagon was set alight on a nearby street shortly after the attack.

Hawi, himself a convicted killer, was imprisoned over the 2009 bashing death of Hell's Angels associate Anthony Zervas in a wild brawl at Sydney Airport.

He was released in 2015 and mainly flew under the radar until he was murdered in February.